<template>
  <view>
    <!-- 用户信息开始 -->
    <view class="user_info">
      <view class="user_icon">
        <image :src="imgDetail.user.avatar"
               mode="widthFix"></image>
      </view>
      <view class="user_desc">
        <view class="user_name">{{imgDetail.user.name}}</view>
        <view class="user_time">{{imgDetail.cnTime}}</view>
      </view>
    </view>
    <!-- 用户信息结束 -->

    <!-- 高清大图开始 -->
    <view class="high_img">
        <swiper-action @swiperAction="handleSwiperAction">
          <image mode="widthFix" :src="imgDetail.thumb"></image>
        </swiper-action>
    </view>
    <!-- 高清大图结束 -->
    <!-- 点赞开始 -->
    <view class="user_rank">
      <view class="rank">
        <text class="iconfont icondianzan">{{imgDetail.rank}}</text>
      </view>
      <view class="user_collect">
        <text class="iconfont iconshoucang">收藏</text>
      </view>
    </view>    
    <!-- 点赞结束 -->
    <!-- 专辑开始 -->
    <view class="album_wrap"
          v-if="album.length">
      <view class="album_title">相关</view>
      <view class="album_list">
        <view class="album_item"
              v-for="item in album"
              :key="item.id">
          <view class="album_cover">
            <image :src="item.cover"
                   mode="aspectFill"></image>
          </view>
          <view class="album_info">
            <view class="album_info_text">专辑</view>
            <view class="album_name">{{item.name}}</view>
            <view class="iconfont iconiconfontjiantou4"></view>
          </view>
        </view>
      </view>
    </view>
    <!-- 专辑结束 -->
    <!-- 最热评论开始 -->
    <view class="comment hot" v-if="hot.length">
      <view class="comment_title">
        <text class="iconfont iconhot1"></text>
        <text class="comment_text">最热评论</text>
      </view>
      <view class="comment_list">
        <view class="comment_item"
              v-for="item in hot"
              :key="item.id">
          <!-- 用户信息 -->
          <view class="comment_user">
            <!-- 用户头像 -->
            <view class="user_icon">
              <image mode="widthFix"
                     :src="item.user.avatar"></image>
            </view>
            <!-- 用户名称 -->
            <view class="user_name">
              <view class="user_nickname">{{item.user.name}}</view>
              <view class="user_time">{{item.cnTime}}</view>
            </view>
            <!-- 用户徽章 -->
            <view class="user_badge">
              <image v-for="item2 in item.user.title"
                     :key="item2.icon"
                     :src="item2.icon"></image>
            </view>
          </view>
          <!-- 评论数据 -->
          <view class="comment_desc">
            <view class="comment_content">{{item.content}}</view>
            <view class="comment_like">
              <text class="iconfont icondianzan">{{item.size}}</text>
            </view>
          </view>
        </view>
      </view>
    </view>
    <!-- 最热评论结束 -->

    <!-- 最新评论开始 -->
    <view class="comment new"
          v-if="comment.length">
      <view class="comment_title">
        <text class="iconfont iconpinglun"></text>
        <text class="comment_text">最新评论</text>
      </view>
      <view class="comment_list">
        <view class="comment_item"
              v-for="item in comment"
              :key="item.id">
          <!-- 用户信息 -->
          <view class="comment_user">
            <!-- 用户头像 -->
            <view class="user_icon">
              <image mode="widthFix"
                     :src="item.user.avatar"></image>
            </view>
            <!-- 用户名称 -->
            <view class="user_name">
              <view class="user_nickname">{{item.user.name}}</view>
              <view class="user_time">{{item.cnTime}}</view>
            </view>
            <!-- 用户徽章 -->
            <view class="user_badge">
              <image v-for="item2 in item.user.title"
                     :key="item2.icon"
                     :src="item2.icon"></image>
            </view>
          </view>
          <!-- 评论数据 -->
          <view class="comment_desc">
            <view class="comment_content">{{item.content}}</view>
            <view class="comment_like">
              <text class="iconfont icondianzan">{{item.size}}</text>
            </view>
          </view>
        </view>
      </view>
    </view>
    <!-- 最新评论结束 -->

    <!-- 下载按钮 -->
    <view class="download">
      <view class="download-btn"
            @click="handleDownload">下载图片</view>
    </view>
    <!-- 最热，最新评论结束 -->
  </view>
</template>

<script>
import moment from 'moment';
import swiperAction from '@/components/swiperAction';
moment.locale("zh-cn");
export default {
  components:{
    swiperAction
  },
  data() {
    return {
      // 图片信息对象 包含用户头像：
      imgDetail: {},
      // 专辑数据
      album:[],
      // 最热评论
      hot:[],
      // 最新评论
      comment:[],
      // 图片的索引
      imgIndex:0
    };
  },
  onLoad() {
    // console.log(getApp().globalData);
    let { imgIndex } = getApp().globalData;
    this.imgIndex=imgIndex;
    this.getData()
  },
  methods:{
    // 给当前页面赋值：
    getData(){
      let { imgList } = getApp().globalData;
      this.imgDetail = imgList[this.imgIndex];
      // 修改时间戳
      this.imgDetail.cnTime=moment(this.imgDetail.atime * 1000).fromNow();
      //获取图片详情的id来发送请求获取评论
      this.getComments(this.imgDetail.id);
    },
    getComments(id){
      this.request({
        url: `http://157.122.54.189:9088/image/v2/wallpaper/wallpaper/${id}/comment`,
      }).then(res=>{
        console.log(res);
        this.album=res.res.album;
        res.res.hot.forEach(item=>{
          item.cnTime=moment(item.atime*1000).fromNow()
        })
        res.res.comment.forEach(item=>item.cnTime=moment(item.atime*1000).fromNow())
        this.hot=res.res.hot;
        this.comment=res.res.comment;
      })
    },
    // 滑动事件
    handleSwiperAction(e){
      // console.log(e);
      // 1.用户左滑imgIndex++
      // 2.用户右滑imgIndex--
      // 3.判断数组是否越界:
      //  左滑:e.direction==='left' && this.imgIndex<imgList.length-1;
      //  右滑:e.direction==='right' && this.imgIndex>0
      let { imgList } = getApp().globalData;
      if(e.direction==='left' && this.imgIndex<imgList.length-1){
        // 可以进行左滑，加载下一页
        this.imgIndex++;
        this.getData()
      }else if(e.direction==='right' && this.imgIndex>0){
        // 右滑，加载上一页
        this.imgIndex--;
        this.getData()
      }else{
        uni.showToast({
          title:'没有图片啦',
          icon:'none'
        })
      }
    },
    // 下载图片
    async handleDownload(e){
      // uni.downloadFile
      // uni.saveImageToPhotosAlbum
      await uni.showLoading({
        title:'下载中'
      })
      // 1.将文件下载到小程序的内存中
      const result1=await uni.downloadFile({
        url:this.imgDetail.img
      });
      const {tempFilePath}=result1[1];
      // 将小程序内存中的临时文件下载到本地上
      const result2=await uni.saveImageToPhotosAlbum({
        filePath:tempFilePath
      });
      // 3.提示用户下载成功
      uni.hideLoading();
      await uni.showToast({
        title:'下载成功'
      })
    }
  }
};
</script>

<style lang="scss" scoped>
.user_info {
  display: flex;
  padding: 20rpx;
  .user_icon {
    padding: 0 20rpx;
    image {
      width: 88rpx;
      border-radius: 50%;
      height: 88rpx;
    }
  }
  .user_desc {
    .user_name {
      color: #000;
      font-weight: 600;
    }
    .user_time {
      color: #ccc;
      font-size: 24rpx;
      padding: 10px 0rpx;
    }
  }
}
.high_img {
  border-bottom: 1rpx solid #eee;
}

.user_rank {
  display: flex;
  height: 80rpx;
  border-bottom: 5rpx solid #eee;
  .rank {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    .iconfont {
    }
  }
  .user_collect {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    .iconfont {
    }
  }
}
.high_img {
  border-bottom: 1rpx solid #eee;
}
.album_wrap {
  padding: 20rpx;
  .album_title {
    padding: 10rpx 0;
  }
  .album_list {
    .album_item {
      display: flex;
      padding: 10rpx 0;
      border-bottom: 10rpx solid #eee;
      .album_cover {
        flex: 1;
        image {
          width: 180rpx;
          height: 180rpx;
        }
      }
      .album_info {
        flex: 3;
        padding-left: 20rpx;
        position: relative;
        .album_info_text {
          width: 100rpx;
          height: 50rpx;
          background-color: $color;
          color: #fff;
          display: flex;
          justify-content: center;
          align-items: center;
        }
        .album_name {
          padding: 10rpx 0;
          color: #888;
        }
        .iconfont {
          font-size: 40rpx;
          position: absolute;
          top: 50%;
          transform: translateY(-50%);
          right: 10%;
          color: #888;
        }
      }
    }
  }
}
.comment {
  .comment_title {
    padding: 15rpx;
    .iconfont {
      color: red;
      font-size: 40rpx;
    }
    .comment_text {
      font-weight: 600;
      font-size: 28rpx;
      color: #666;
      margin-left: 10rpx;
    }
  }
  .comment_list {
  }
}
.comment_list {
  .comment_item {
    border-bottom: 15rpx solid #eee;
    .comment_user {
      display: flex;
      padding: 20rpx 0;
      .user_icon {
        width: 15%;
        display: flex;
        justify-content: center;
        align-items: center;
        image {
          width: 90%;
        }
      }
      .user_name {
        flex: 1;
        .user_nickname {
          color: #777;
        }
        .user_time {
          color: #ccc;
          font-size: 24rpx;
          padding: 5rpx;
        }
      }
      .user_badge {
        image {
          display: inline-block;
          margin-right: 10rpx;
          width: 40rpx;
          height: 40rpx;
        }
      }
    }
    .comment_desc {
      display: flex;
      padding: 30rpx 0;
      .comment_content {
        flex: 1;
        padding-left: 15%;
        color: #000;
        padding-right: 15%;
      }
      .comment_like {
        position: relative;
        .iconfont {
          position: absolute;
          right: 20rpx;
          font-size: 38rpx;
        }
      }
    }
  }
}

.new {
  .iconpinglun {
    color: aqua !important;
  }
}
.download {
  height: 100rpx;
  display: flex;
  justify-content: center;
  align-items: center;
  .download-btn {
    width: 90%;
    height: 70%;
    background-color: $color;
    color: #fff;
    font-size: 32rpx;
    font-weight: 600;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}
</style>